Download the latest firmware for GALAXY Ace DUOS with model code GT- S6802. Which is something that a tool called XXMD1 Official Firmware is perfectly capable of doing. Check out our free download or super fast premium options.First regions to get it are Trinidad Tobago ( TTT) Brasil ( ZTO). Firmware update for samsung galaxy ace duos. Unveiled on 24 February at Mobile World Congress in Barcelona Spain it was released on 11 April in 150 countries as the immediate successor to the Galaxy. Com @ Live page, where you can see a real- time firmware releases.